Vacuum pump
Diaphragm flexes to draw/discharge gas through check valves, isolated from the drive. Oil-free, clean.
Typical range
0.1–2 HP, to ~100 mbar ultimate
Best for
Lab, medical, analytical instruments, oil-free clean vacuum.
Operating principle
A diaphragm flexes to draw and discharge gas through check valves, isolated from the drive — oil-free, hermetic vacuum. Low flow, clean.
Efficiency notes
Oil-free, clean, low flow. Limited ultimate vacuum but contamination-free.
Selection guidance
Lab vacuum, medical, gas sampling where oil-free clean vacuum is needed.
Components
- Diaphragm
- Check valves
- Eccentric drive
- Head
- Sealed bearings
Common issues
- Diaphragm fatigue/rupture
- Check valve failure → reduced vacuum
- Pulsation
Maintenance
- Diaphragm replacement per OEM
- Check-valve service
- Clean inlet filter
Field tips
- Hermetic separation keeps the vacuum stream oil-free
- Diaphragm fatigue is the main wear item — replace on OEM interval
- Low flow and clean — ideal for analytical instruments